A shiny Lugia is not Purple A shiny Lugia is where the places on Lugia's body is normally blue or the big spot on its body is now pinkish-red. If it is pruple, It is a shadow Lugia which is only found if Pokemon XD: Gale of Darkness: Which you must purify before trading

Do you know how hard it is to type on a PSP?

[CENTER][IMG]http://www.wizards.com/magic/images/whatcolor_isred.jpg[/IMG][URL=http://www.wizards.com/magic/playmagic/whatcolorareyou.asp][B]Take the Magic: The Gathering 'What Color Are You?' Quiz.[/B][/URL][/CENTER]

A shiny Lugia is not Purple A shiny Lugia is where the places on Lugia's body is normally blue or the big spot on its body is now pinkish-red. If it is pruple, It is a shadow Lugia which is only found if Pokemon XD: Gale of Darkness: Which you must purify before trading

Continuing what Gogeta said, therefore you can't get a Shadow Lugia into Ruby, Sapphire, or Emerald.